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Source:
Colnect
Issued by:
Hungary
Function:
postage
Date:
3/14
/
1959
Issue:
IGY
Denom:
20f
Color:
green blue & dark blue green
Design:
Deep sea exploration
Watermark:
stars (Cuba)
Perf:
Catalog value:
In collections:
used
(Stan Shebs)
, some private
Prev:
10f redpur&blkbrn d=Eötvös Torsion Balance & globe
Next:
30f d=icebergs penguins & polar light
External links:
Colnect 178230..ophysical_Year
Colnect 613065..ophysical_Year